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I downloaded a lot of updates to Elyssa this morning: now I get an xml error message when I try to send an e-mail via Thunderbird. The error disappeared when I selected Plain text only instead of the default format. I also get an xml error message when I try to open the Thunderbird address book. I have to enter a name in the 'To' box to get the address, then delete the compose window if I don't want it.

Later (edited in) - I have discovered that sending an original mail doesn't produce the error message although by default that is in html - I think it happened when I tried to send a reply to an incoming html mail.

However, it still produces an error message when I try to open the address book: it says: "XML Parsing Error: not well-formedLocation: chrome://messenger/content/addressbook/addressbook.xulLine Number 1, Column 16: dirTree.focus();---------------^. "Edited again! I tried to open Edit>Preferences in Thunderbird - the following appeared: "XML Parsing Error: syntax errorLocation: chrome://messenger/content/preferences/preferences.xulLine Number 1, Column 1:AuthMethod.localName + ">\n");^ "Please, how do I remove the offending update, or otherwise adjust Thunderbird so that it is acceptable - does it require an extension? ?